package com.zqw.intercept;

import com.zqw.ss.AuthCheckAnno;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MyIntercept implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {

        if(o instanceof HandlerMethod){
            HandlerMethod o1 = (HandlerMethod) o;
            if(o1.hasMethodAnnotation(AuthCheckAnno.class)&&httpServletRequest.getSession().getAttribute("user")==null){
                httpServletResponse.sendRedirect("login.jsp");
                return false;
            }
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}
